Sandbox III: Revenge of the Sandbox

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SCP Sandbox

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Special Containment Procedures: SCP-XXXX is to be contained in a 7 m x 7 m x 7 m chamber with walls made of concrete at least 2 inches thick. Cameras in the chamber are to be placed behind 1 inch bullet-resistant glass, fitted into the corners of the chamber. One D-Class subject is to be released into SCP-XXXX's chamber once a week for "feeding" of the entity.

SCP-XXXX's containment cell is to be cleaned during the entity's dormant state, following sedation and transfer of the entity to a temporary cell. Cleaning is to be done with pressurized water and no chemical cleaners are to be used, due to the high probability of SCP-XXXX coming into contact with dangerous material.

As of Incident-SCP-XXXX-A resulting in a containment breach and ██ Foundation casualties, all Class-D personnel that enter the containment cell are to be thoroughly checked for any foreign matter besides their standard Class-D apparel. This includes but is not limited to, dental fillings, piercings, and prosthetic limbs.

Description: SCP-XXXX is a quadrupedal entity with an approximate length of 3.12 meters. SCP-XXXX's skin is dark, with lengthwise black stripes covering most of it's body. It bears a humanoid torso and head with four limbs, resembling those of Araneae, at the corners of the body , with two joints as opposed to one. These limbs are approximately 1.4 meters long when fully extended, and possess a human-like hand at the end of each limb, 13 cm across, and 38 cm in length. It's fingers take up roughly 3/4 of the length, measured at 27 cm. The palms of SCP-XXXX's "hands" are covered in setules, similar again to that of Araneae, and allow it to traverse vertical and upside-down terrain. SCP-XXXX also bears two smaller appendages at the center of it's chest, approximately 17 cm long and ending in sharp points able to pierce soft materials. An orifice resembling a mouth is present between these two appendages, and is used to consume materials selected by the entity.

SCP-XXXX enters a dormant state every 8 hours for a 2 hour period, and will wrap itself in it's limbs and halt all external movement. The entity has not been seen to resume activity when undisturbed during these periods, though will awake suddenly should it's body be tampered with.

All recorded reasons for these premature awakenings are as follows:

The entity's mask is touched by any force, human or inhuman, which will then cause it to enter a hyper-aggressive state for approximately 60 minutes

SCP-XXXX's chest mandibles have the ability to pierce and liquefy materials by injecting an unidentified venom. This venom appears to only be able to be injected upon penetration of a target, similarly to the fangs of Viperidae. Attempts to analyze the composition of this venom have proved difficult, as the venom appears to evaporate upon contact with gaseous oxygen.
After several seconds, the target will begin to melt from the inside out, the effect reminiscent of a melting wax candle. SCP-XXXX will then work the target with it's mandibles, piercing and kneading the object into a spherical shape. SCP-XXXX will continue to work the sphere in it's mandibles until it is a near perfect sphere, designated as SCP-XXXX-1. Recovered instances of SCP-XXXX-1 have been found to still be made of living tissue, despite the deformation and redistribution of atoms, and will only expire after excessive surgical examination. Subjects that undergo this process have described the feeling as "peaceful" and state that they have somewhere to be. Subjects have lasted approximately 20 seconds after initial injection, before dissolving into an unrecognizable mass.

Upon selection of a material from an instance of SCP-XXXX-1, SCP-XXXX's mandibles will demonstrate their unique ability to pull apart atoms and separate molecular compounds. It is currently unknown how SCP-XXXX is able to do so without standard consequences of atom splitting. SCP-XXXX has been observed to be able to separate near trace amounts of materials. The smallest recorded amounts that SCP-XXXX has been able to remove were 2.35mL of chlorine from a D-Class uniform, and 1.02 grams of Mercury from a D-Class dental filling. SCP-XXXX cannot pierce or knead atoms already in a gaseous state, though can still inhale them through it's "mouth" to gain it's mutation effects.

Once SCP-XXXX selects a material for consumption, it is fed to the orifice on it's chest. After the material is consumed, SCP-XXXX undergoes a rapid mutation usually taking between 5-10 seconds after consumption. SCP-XXXX's body will begin to shake intensely as the change occurs, SCP-XXXX's skin composition rapidly gaining characteristics of the material it consumed. Mutations caused by this effect have been recorded to last between ten minutes up to an hour of time. After a varying time period, or SCP-XXXX consumes another material, the mutations effects will rapidly deteriorate and SCP-XXXX will resume it's base form without any visible mutations. It is currently unknown if the amount of individual materials consumed affects the duration of mutations. SCP-XXXX has been observed to be immune to any negative effects that it's mutations cause, instead affecting anything but the entity, if applicable.

It is to be noted that SCP-XXXX cannot liquefy anything that it's central appendages cannot pierce or grab onto. SCP-XXXX has however been observed to add harder objects to it's material sphere during it's "kneading" process. The objects that were previously unable to be melted will then assimilate into the mix over time, and allow for atom splitting. SCP-XXXX has been proven to be able to consume materials that are too small to pierce, though it seems to do so reluctantly.

Test #:XXXX02Material Consumed: 1.02g of mercuryProcedure: N/AMutation Time: 30 secondsResults: Subject's skin became a hue of silver and appeared to be composed of liquid mercury. Subject left a trail of liquid mercury behind as it moved throughout the facility. ██ Foundation casualties. Updated containment procedures.Notes:

//As of test #XXXX03 SCP-XXXX is not to be introduced to any samples of living tissue, and all future tests require clearance from O5 Command, due to the unpredictable and dangerous nature of possible mutations
O5-█

The entity also wears a mask across it's face, presumed to be made of paper maché, dried leaves, and other yet-to-be identified plant matter. The mask is partially grafted into the entity's skin, making removal nigh impossible. Attempts to do so or make physical contact with the mask have resulted in extreme hostility and aggression, often resulting in SCP-XXXX using it's chest mandibles to [DATA EXPUNGED] the target into an unrecognizable state.

SCP-XXXX is sapient and hostile towards humans, and will pace around it's holding chamber on the daily, climbing onto the ceiling and staring into the cameras on occasion.

SCP-XXXX was discovered on ██/██/20██ when a small town outside of ███████, Russia, went completely dark overnight. A family travelling through called police after finding the modern town entirely abandoned. Authorities contacted the Foundation upon arrival, and MTF Epsilon-6 ("Village Idiots") was deployed to sweep the town and surrounding area for anomalous activity.

Note: Police had received reports of several missing children over several days, prompting an area-wide search by police forces and locals. All participants failed to return overnight, and the Foundation was contacted to conduct an investigation on possible anomalous activity.